from tkinter import *
import turtle

root = Tk()
cv = Canvas(root, width=500, height=500)
cv.pack()
screen = turtle.TurtleScreen(cv)
t = turtle.RawTurtle(screen)
t.speed()
t.penup()
t.pensize(3)
t.goto(0, -20)
t.pendown()
t.pencolor('red')
t.circle(20)
t.penup()
t.goto(0, -50)
t.pencolor('green')
t.pendown()
t.circle(50)
t.hideturtle()
root.mainloop()